A federal judge has blocked a Trump administration decision to revoke Harvard University’s ability to enroll international students.

The Trump administration is trying to strip Harvard of its ability to enroll international students — an effort blocked by a federal judge on Friday, just hours after the university filed a lawsuit claiming Trump was violating its First Amendment rights.

President Donald Trump rubbed salt on the wound of his recent Harvard student ban by claiming a “lot of them” can’t even do basic math. His petty comment came a day after he moved to bar foreign students from enrollment as part of his ongoing feud with the Ivy League school.